KA79M12

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PMIC (Power Management Integrated Circuit) regulators are responsible for providing a clean and stable power supply while minimizing power consumption. The KA79M12 is a linear voltage regulator which provides with adjustable output voltage and improved low power performance. It is used to get power from a variety of sources, including battery-based power sources, wall adapters, automotive power, and solar cell power.

The KA79M12 is a three-terminal low-dropout voltage regulator, with the ability to provide an adjustable output voltage from 1.2V to 36V with a maximum output current of 1.5A. Additionally, it also offers excellent thermal performance, and improved line and load transient response.

The KA79M12 linear regulator provides better accuracy and low power performance. It is well-suited for applications that require a dynamic voltage range and precision output voltage control. It is also able to dissipate heat efficiently, making it suitable for high-power applications.

The KA79M12 has an adjustable dropout voltage of 0.2V to 5V and it operates over a wide temperature range of -40°C to 125°C. The device has an input thermostat feature to maintain a steady output voltage regardless of variations in the input voltage. The device is available in three different packages: Surface Mount Device (SMD), Through Hole (TH), and Chip Form (CF).

The work principle of KA79M12 linear regulator is based on the volt-ampere curve. Generally, the principle of operation is quite simple. It relies on the PNP and NPN bipolar transistors connected in parallel, the base of one is connected to the output of the regulator, and the base of the other is connected to the input of the regulator. When the device is switched on, the emitter of the PNP transistor is connected to ground, and the emitter of the NPN transistor is connected to the output voltage. This gives the output voltage a reference, and any current that is drawn from the output is supplied by the NPN transistor.

To ensure better stability, the KA79M12 has an additional feature of current limiting. It senses the output current and shuts off the regulator if the current is excessive. The current limit function can be adjusted, and the maximum output current can be selected. It even has a protection circuit for reverse current conduction. This prevents the destruction of the device.

The KA79M12 is ideal for applications that require high efficiency and extremely precise output voltage control. It can be used in motor control, solar cell, power supply, telecommunications, automotive, and consumer electronic products.

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